Reading age meaning

[OrtIrect]

Hello - feel a bit daft asking this but I just got a school report with a reading age expressed as 13/3. If it was just the number 13 I would have thought it meant reading age is 13 but what does the /3 mean?

13 years and 3 months.

😁well now I DO feel daft! Simple explanation but thank you for clarifying. I didn’t know the grading was as
exact as months.

Glad I could help. I only know as I'm in charge of reading at my school 😬. Loads of silly acronyms and codes in education that never get explained.